would like on screen display after the press of a few buttons or front display even. I know some machines will show time remaining per chapter but none for the whole disc ie. the viewing time left of a film.
I'm pretty sure you'll be able to get ones that show it on the OSD, if not the front panel.
Every player I've ever tried shows it on the OSD, usually you have to cycle through the timers though. The Panasonic DVD I have in this room (which I've just tried) shows the time remaining in the chapter initially, but you can cycle through to the time remaining in the title.
I tried the two Panasonic DVD players I have (an S27 cheapy that came free with a tv, and a 510 one-box surround thing) and they both show all various times remaining.
They do it in different ways though, and I imagine it'll be different on yours too, as it's a recent model. But still, I'm pretty sure you'll be able to do it.
As I mentioned earlier, the ones I have cycle through the timers. If you can display any timer, there's a chance that you'll be able to access time remaining in the same way. Either by pressing the same button again, using one of the directional buttons, or pressing enter or something else, to cycle through the various timers..